| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a flow path selector valve which can retain a seating condition of a main valve 3 by a differential pressure between the outside of the main valve 3 and a low pressure passage 31A, which can quickly perform pressure equalization in a high-pressure coolant of the outside of the main valve 3 and a low-pressure coolant in the low-pressure passage 31A, and which can secure the rotary movement of the main valve 3. Ž<P>SOLUTION: A pressure-equalization valve 4 is provided to the main valve 3, and a first communicating hole 34 and a second communicating hole 35 are formed. The first communicating hole 34 connects the low-pressure passage 31A and the top of the main valve 3, and the second communicating hole 35 connects the sub-valve back space 42A and the top of the main valve 3. A sub-sub valve 5 is provided above the main valve 3, and switching between connection and non-connection of the first communicating hole 34 and the second communicating hole 35 is performed by rotating the sub-sub valve 5. The sub-valve back space 42A is brought under high-pressure, and a sub-valve 43 is seated in a sub-valve port 41 in the non-connection state of the first communicating hole 34 and the second communicating hole 35. Then air conditioning operation or heating operation is performed. The sub-valve 43 is separated from the sub-valve port 41 in the connection state of the first communicating hole 34 and the second communicating hole 35. Then pressure equalization is performed in the space of the outside of the main valve 3 and the interior of the low-pressure passage 31A, and the main valve 3 is rotated. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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